Error after clicking on Send to Server

[proshikari]

[2019-11-05 03:49:21,013] ERROR in app: Exception on /send_img [POST]
Traceback (most recent call last):
File "C:\Users\Ganesh\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\app.py", line 2446, in wsgi_app
response = self.full_dispatch_request()
File "C:\Users\Ganesh\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\app.py", line 1951, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Users\Ganesh\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\app.py", line 1820, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "C:\Users\Ganesh\AppData\Local\Programs\Python\Python37\lib\site-packages\flask_compat.py", line 39, in reraise
raise value
File "C:\Users\Ganesh\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\app.py", line 1949, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Users\Ganesh\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\app.py", line 1935, in dispatch_request
return self.view_functionsrule.endpoint
File "app.py", line 52, in send_img
layoutDetection.main("images/origin.jpg", html_filename, html_filename)
File "C:\Users\Ganesh\Downloads\sketch2html-master\layoutDetection.py", line 770, in main
merged_lines_all = lineMerge.mergeLine(img, lines)
File "C:\Users\Ganesh\Downloads\sketch2html-master\layoutDetection.py", line 144, in mergeLine
for line in self.get_lines(lines):
File "C:\Users\Ganesh\Downloads\sketch2html-master\layoutDetection.py", line 15, in get_lines
return [l[0] for l in lines_in]
TypeError: 'NoneType' object is not iterable
127.0.0.1 - - [05/Nov/2019 03:49:21] "�[1m�[35mPOST /send_img HTTP/1.1�[0m" 500 -

[GTron-1729]

@proshikari @jyheo @qkek984 @psm9733 I am also getting a blank screen after passing an image as input and there is an error message in the console log. So anyone solved the issue please help Guys!